Exuberant dreamer Ben Fox (Nat Faxon) returns to his hometown and reunites with his younger sister KATE (Dakota Johnson), an overly responsible single mom raising her five-year-old daughter, MADDIE (Maggie Elizabeth Jones). But when he arrives, he finds a sad state of affairs. For the first time in their lives, Kate needs Ben’s help, and he’s determined to bring some much-needed chaos into her stable world. In the series premiere, Kate enlists co-worker BJ (Lucy Punch) to help her prepare for what turns out to be a disastrous first date, while Ben teams up with childhood pal TOMMY (Echo Kellum) to stop an ex from getting married in the “Pilot” episode of BEN AND KATE airing tonight, Dec. 11 (8:30-9:00 PM ET/PT) on FOX. (BEN-101) (TV-PG D, L)